Question

use the scenario to answer the question. scenario: you observe the growth of a group of plants that have been tipped over. how will auxin influence cell growth in the roots of these plants? (1 point) a. auxin will build up on the lower side of the root and inhibit cell growth. b. auxin will build up on the upper side of the root and inhibit cell growth. c. auxin will build up on the upper side of the root and stimulate cell growth. d. auxin will build up on the lower side of the root and stimulate cell growth.

Explanation:

When plants are tipped over, auxin accumulates on the lower side of roots. Unlike shoots, roots are sensitive to auxin; higher concentrations of auxin inhibit root cell growth, causing the root to bend downward (positive gravitropism).

Answer:

Auxin will build up on the lower side of the root and inhibit cell growth.